Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for converting color image resolution with an image resolution converting device, comprising: inputting an image enlarging ratio; inputting target pixel data of an image in a first color space to be enlarged in a sequence; sampling, by the device, reference pixels including the target pixel and pixels at least one of which links to the target pixel; converting, by the device, the sampled reference pixel data in the first color space into reference pixel data in a second color space data; comparing, by the device, a pixel data distribution of the sampled reference pixels with a plurality of matching patterns in the second color space; outputting one of a plurality of pixel embedding patterns according to a coincided matching pattern and the image enlarging ratio; generating filling color information for filing the pixels of the embedding pattern with colors according to a result of the comparing step; and filling the pixels of the embedding pattern with colors of the reference pixels in the first color space according to the generated filling color information.
2. The method according to claim 1 , wherein the first color space comprises red, green, and blue colors, and the second color space comprises luminance information, hue information, and saturation information, and wherein the comparing step compares the pixel data distribution of the sampled reference pixels with the plurality of matching patterns in one of the luminance information, the hue information, and the saturation information.
3. The method according to claim 1 , wherein the first color space comprises red, green, and blue colors, and the second color space comprises luminance information, first color difference information, and second color difference information, and wherein the comparing step compares the pixel data distribution of the sampled reference pixels with the plurality of matching patterns in one of the luminance information, the first color difference information, and the second color difference information.
4. A method for converting color image resolution with an image resolution converting device, comprising: inputting an image enlarging ratio; inputting target pixel data of an image in a first color space to be enlarged in a sequence; sampling, by the device, reference pixels including the target pixel and pixels at least one of which links to the target pixel; converting, by the device, the reference pixel data into a predetermined number of bi-level reference pixel data with a predetermined number of threshold values respectively; comparing, by the device, each pixel data distribution of the predetermined number of the bi-level reference pixel data with a plurality of matching patterns; generating a predetermined number of embedding patterns according to coincided matching patterns and the image enlarging ratio; generating an output pixel pattern by merging the predetermined number of generated embedding patterns; and outputting the generated pixel pattern.
5. The method according to claim 4 , further comprising: generating a plurality of the embedding patterns based on a plurality of basic embedding patterns according to the input image enlarging ratio.
6. The method according to claim 4 , further comprising: converting the sampled reference pixel data in the first color space into reference pixel data in a second color space data, wherein, the comparing step compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data with the plurality of matching patterns in the second color space, and the method further comprises: generating filling color information for filing the pixels of the embedding patterns with colors in the first color space according to a result of the comparing step; and filling the pixels of the predetermined number of generated embedding patterns with the colors of the reference pixels in the first color space according to the generated filling color information.
7. The method according to claim 4 , wherein the first color space comprises red, green, and blue colors, and the second color space comprises luminance information, hue information, and saturation information, and wherein the comparing step compares each of the pixel data distributions of the predetermined numbed of the bi-level reference pixel data with the plurality of matching patterns in one of the luminance information, the hue information, and the saturation information.
8. The method according to claim 4 , wherein the first color space comprises red, green and blue colors, and the second color space comprises luminance information, first color difference information, and second color difference information, and wherein the comparing step compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data with the plurality of matching patterns in one of the luminance information, the first color difference information, and the second color difference information.
9. The method according to claim 4 , further comprising: dividing an area of the sampled reference pixels into plural areas, wherein the comparing step compares the divided pixel data distribution of the sampled reference pixels with the plurality of matching patterns.
10. The method according to claim 4 , further comprising: converting the target pixel data in the first color space into pixel data in a second color space comprising luminance data and color data, wherein the comparing step compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data in the second color space with the plurality of matching patterns, and the method further comprises: converting the generated output pixel pattern in the second color space into an output pixel pattern in the first color space.
11. The method according to claim 10 , wherein the comparing step compares each luminance data distribution of the predetermined number of bi-level reference pixel data with the plurality of matching patterns.
12. The method according to claim 4 , wherein the predetermined number of threshold values for converting the reference pixel data are generated based on the reference pixel data.
13. The method according to claim 12 , wherein the predetermined number of threshold values for converting the reference pixel data are generated based on a maximum value and a minimum value among the reference pixel data.
14. The method according to claim 4 , wherein the merging the embedding patterns during the generating step is performed such that a relatively darker pixel pattern is overlaid over a relatively lighter pixel pattern.
15. A computer-readable medium carrying one or more sequences of one or more instructions for converting color image resolution, the one or more sequences of one or more instructions including instructions which, when executed by one or more processors, causes the one or more processors to perform the steps of: inputting an image enlarging ratio; inputting target pixel data of an image in a first color space to be enlarged in a sequence; sampling reference pixels including the target pixel and pixels at least one of which links to the target pixel; converting the reference pixel data into a predetermined number of bi-level reference pixel data with a predetermined number of threshold values respectively; comparing each pixel data distribution of the predetermined number of the bi-level reference pixel data with a plurality of matching patterns; generating a predetermined number of embedding patterns according to coincided matching patterns and the image enlarging ratio; generating an output pixel pattern by merging the predetermined number of generated embedding patterns; and outputting the generated output pixel pattern.
16. A color image resolution converting apparatus, comprising: an enlarging ratio input device configured to input an image enlarging ratio; an image data input device configured to input target pixel data of an image in a first color space to be enlarged in a sequence; a pixel sampling device configured to sample reference pixels including the target pixel and pixels at least one of which links to the target pixel; a color space converting device configured to convert the sampled reference pixel data in the first color space into reference pixel data in a second color space data; a pattern comparing device configured to compare a pixel data distribution of the sampled reference pixels with a plurality of matching patterns in the second color space; an image data output device configured to output generated and selected pixel data; a filling color generating device configured to generate filling color information for filing the pixels of the embedding pattern with colors according to an output of the pattern comparing device; and a filling device configured to fill the pixels of the embedding pattern with colors of the reference pixels in the first color space according to the generated filling color information.
17. The apparatus according to claim 16 , wherein the first color space comprises red, green and blue colors, and the second color space comprises luminance information, hue information, and saturation information, and wherein the comparing device compares the pixel data distribution of the sampled reference pixels with the plurality of matching patterns in one of the luminance information, the hue information, and the saturation information.
18. The apparatus according to claim 16 , wherein the first color space comprises red, green, and blue colors, and the second color space comprises luminance information, first color difference information, and second color difference information, and wherein the comparing device compares the pixel data distribution of the sampled reference pixels with the plurality of matching patterns in one of the luminance information, the first color difference information and the second color difference information.
19. A color image resolution converting apparatus, comprising: an enlarging ratio input device configured to input an image enlarging ratio; a pixel data input device configured to input target pixel data of an image in a first color space to be enlarged in a sequence; a pixel sampling device configured to sample reference pixels including the target pixel and pixels at least one of which links to the target pixel; a bi-level data converter configured to convert the reference pixel data into a predetermined number of bi-level reference pixel data with a predetermined number of threshold values respectively; a comparing device configured to compare each pixel data distribution of the predetermined number of the bi-level reference pixel data with a plurality of matching patterns; a pixel pattern generating device configured to generate a predetermined number of embedding patterns according to coincided matching patterns and the image enlarging ratio; a pixel pattern merging device configured to generate an output pixel pattern by merging the predetermined number of generated embedding patterns; and an image data output device configured to output the generated pixel pattern.
20. The apparatus according to claim 19 , further comprising: an embedding pattern generating device configured to generate a plurality of the embedding patterns based on a plurality of basic embedding patterns according to the input image enlarging ratio.
21. The apparatus according to claim 19 , further comprising: a color space converting device configured to convert the sampled reference pixel data in the first color space into reference pixel data in a second color space data, wherein the comparing device compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data with the plurality of matching patterns in the second color space, and the apparatus further comprises: a filling color generating device configured to generate filling color information for filing the pixels of the embedding patterns with colors in the first color space according to an output of the comparing device; and a color filling device configured to fill the pixels of the predetermined number of generated embedding patterns with the colors of the reference pixels in the first color space according to the generated filling color information.
22. The apparatus according to claim 19 , wherein the first color space comprises red, green, and blue colors, and the second color space comprises luminance information, hue information, and saturation information, and wherein the comparing device compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data with the plurality of matching patterns in one of the luminance information, the hue information, and the saturation information.
23. The apparatus according to claim 19 , wherein the first color space comprises red, green, and blue colors, and the second color space comprises luminance information, first color difference information, and second color difference information, and wherein the comparing device compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data with the plurality of matching patterns in one of the luminance information, the first color difference information, and the second color difference information.
24. The apparatus according to claim 19 , further comprising: an area dividing device configured to divide an area of the sampled reference pixels into plural areas, wherein the pattern comparing device compares the divided pixel data distribution of the sampled reference pixels with the plurality of matching patterns.
25. The apparatus according to claim 19 , further comprising: a color space converting device configured to convert the target pixel data in the first color space into pixel data in a second color space comprising luminance data and color data, wherein the pattern comparing device compares each of the pixel data distributions of the predetermined number of the bi-level reference pixel data in the second color space with the plurality of matching patterns, and the apparatus further comprises: a second color space converting device configured to convert the generated output pixel pattern in the second color space into an output pixel pattern in the first color space.
26. The apparatus according to claim 25 , wherein the pattern comparing device compares each luminance data distribution of the predetermined number of bi-level reference pixel data with the plurality of matching patterns.
27. The apparatus according to claim 19 , wherein the predetermined number of threshold values for converting the reference pixel data are generated based on the reference pixel data.
28. The apparatus according to claim 27 , wherein the predetermined number of threshold values for converting the reference pixel data are generated based on a maximum value and a minimum value in the reference pixel data.
29. The apparatus according to claim 19 , wherein the merging the embedding patterns to generate the output pixel pattern is performed such that a relatively darker pixel pattern is overlaid over a relatively lighter pixel pattern.
30. A color image resolution converting apparatus, comprising: means for inputting an image enlarging ratio; means for inputting target pixel data of an image in a first color space to be enlarged in a sequence; means for sampling reference pixels including the target pixel and pixels at least one of which links to the target pixel; means converting the reference pixel data into a predetermined number of bi-level reference pixel data with a predetermined number of threshold values respectively; means for comparing each pixel data distribution of the predetermined number of the bi-level reference pixel data with a plurality of matching patterns; means for generating a predetermined number of embedding patterns according to coincided matching patterns and the image enlarging ratio; generating an output pixel pattern by merging the predetermined number of generated embedding patterns; and means for outputting the generated output pixel pattern.
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September 1, 2009
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